Eyeglasses with convex lenses used to correct vision for people with presbyopia; also called 老花镜 lǎo​huā​jìng or 老花眼镜 lǎo​huā​yǎn​jìng.

A Qing Dynasty book on gardening and animal husbandry written by Chen Haozi, covering the cultivation and management of ornamental plants and animals.